Recently, there are emerging reports on the beneficial effect of imatinib mesylate for pediatric CML patients; however, the general recommendation is that high-risk CML patients with a human leukocyte antigen-identical donor should be transplanted within the first 12 months after diagnosis. Herein, the data of 16 allogeneic HSCT in 14 children with CML were analyzed retrospectively. In the present study, three-yr EFS was 54.1+/-10.8% and three-yr OS was found as 80.7+/-12.5%.